<template>
  <div class="grandson">
    <h1>我是Grandson</h1>
  </div>
</template>

<script>
  export default {
    name:'Grandson',
    mounted() {
      console.log('Grandson-mounted')
    },
  }
</script>

<style>
  .grandson{
    background-color: green;
    padding: 20px;
    box-shadow: 0 0 10px black;
    border-radius: 10px;
  }
</style>